Device foe mechanically substituting one disk for another



No. 749,826. PAIENTED JAN. I9, 1904. A. J. ROD.

DEVICE FOR MEGHANICALLY SUBSTITUTING ONE DISK IOR ANOTHER IN MUSICPIECES.

.APPLICATION FILED JAN. 15, 1900.

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No. 749,826. PATENTED JAN. 19, 1904. A. J. ROD.

DEVICE POR MBCHANICALLY SUBSTITUTING ONE DISK POR ANOTHER IN MUSICPIECES.

APPLICATION FILED JAN. 15, 1900.

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No. 749,826. PATENTED JAN. 19, 1904.

A. J. ROD. DEVICE EUR MEGHANIGALLY SUBSTITUTING ONE DISK FOR ANOTHER INMUSIC PIECES.

APPLIGATIGN FILED JAN. 15, 1900.

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Patented January 19, 1904.

UNITED STATES PATENT OFFICE.

ALFRED JACCARD ROD, OF STE. CROIX, SVITZERLAND, ASSIGNOR TO HERMANNOHORENS, OF STE. CROIX, SlVlTZERLAND.

DEVICE FOR MECHANICALLY SUBSTITUTING ONE DISK FOR ANOTHER lNMUSIC-PIECES.

SPECIFICATION forming part of Letters Patent No. 749,826, dated January19, 1904.

Application filed January l5, 1900. Serial No. 1,539. (No model.)

To all whom, t may concern.-

Be it known that I, ALFRED JACCARD ROD, a citizen of the Republic ofSwitzerland, and a resident of Ste. Oroix, in the canton of Vaud,Switzerland, have invented certain new and useful Improvements inDevices for Mechanically Substituting One Disk for Another in MusicalInstruments, of which the following is a specification.

My invention relates to apparatus whereby perforated music-disks may bemechanically interchanged from inoperative to operative positions ininstruments of the class in which such disks are employed; and itconsists of the construction, arrangement, and combination of parts, asfully described hereinafter.

In the accompanying drawings, Figure 1 is a front elevation of a machineembodying my improvements. Fig. 2 is a side elevation of the samelooking from the left-hand side of Fig. 1. Fig. 3 is a cross-section online A B of Fig. 1. Fig. 4 is a top plan view of the upper portion ofthe machine. Figs. 5 and 6 are details showing the automatic graspingand releasing device lwhich constitutes an important feature of myinvention. Fig. 7 is a detail in elevation, on an enlarged scale, of thedisk-holder and guide. Fig. 8 is a top plan view of the parts shown inFig. 7. Fig. 9 is a detail of the snail-wheel and adjacent parts. Fig.10 is a detail showing the operation of one of the levers employed inthe machine.

Each perforated disk 1 is of the usual pattern, is provided with a rowof holes 1fL near its periphery in addition to the perforations whichengage the teeth of the usual musical comb, and is vertically mounted ona horizontal shaft 2, fixed on a' metal rod 3, the upper end of which isconnected to a cord 5, which extends over guide-pulleys A4 and car riesat its opposite end a hollow socket 47. The pulleys 4 are mounted on acommon frame support 6, adapted to be moved horizontally toward and awayfrom the front of the machine or apparatus on two guide-rods 9, suchmovements being' imparted by any suitable means operated by hand ormechanically, whereby the respective disks may be brought into operativerelations with the cooperating mechanism. In the bottom of each socketis an opening 48, the sides of whiclriiare downwardly and outwardly tofacilitate the entrance of the upper end of a vertical rod 10 when asocket has been brought directly over said rod by the movement of thesupport 6. The rod 10 is provided in its upper end with a groove 50,Fig. 6, in which is pivoted the lower end of a hook 51, which isnormally pressed outwardly by a spring 52, secured in the groove. Therod is adapted to move vertically in a bearing 10 and carries at itslower end a balance-weight 49. Vhen the rod moves upwardly, its pointedupper end enters the opening 48 of the socket, which has been broughtdirectly over the rod, the end of the hook 51 being pushed back into thegroove by the sides of the opening, and when the end is beyond `theopening and within the socket the spring 52 presses outwardly the hook,which is thereby positively connected with the socket, so that thefollowing downward movement of the rod carries with it the socket,thereby pulling down the socket end of the cord 5 and correspondinglyelevating the disk end of said cord, and hence the disk which happens tobe then attached to the rod 3, which is connected with that cord. Thehook 51 is formed with a shoulder 51L just below its upper end, whichwhen the rod 10 moves downwardly. engages the sides of the opening inthe bracket 54, thereby pushing the hook into the groove against thetension of the spring and thus releasing the socket, the downwardmovement of the latter being limited at a point above the correspondingmovement of the rod.

The rod 10 is connected to a lever 75 by a link 75h, which is pivoted tothe lever at 77 and to the rod near the bearing 10a. Said lever isprovided at its free end with a lug 53, which engages one end of ahorizontallymounted lever 16, the opposite end of which is pivoted at15. Near the center of the 1ever 16 and projecting from its upper sideis a pin 17, which is in constant frictionalcontact with the peripheryof a snail-wheel 18. This wheel is fixed on the shaft 21, which rotateswith the drum 9.() in the direction indicated by the arrow 1/ in Figs. 2and 3. Any suitable means for driving said drum may be employed, thesame forming no part of this invention. As the snail-wheel rotates thepin 17 a is progressively moved from the smallest to the greatest radiusof the wheel, thus causing a greater or less movement of the lever 16 inthe arc in which it reciprocates. At the greatest radius of the wheelthe lever will be moved outwardly to its full limit, and thereby producea corresponding movement to the lever 75, the effect of which will be topush upwardly the rod 10 through the connectinglink 7 5h. As the pinreaches the smallest radius of the wheel the pressure on the lever 16will be relieved, and the lever and rod will be returned to their normalpositions through the medium of the weight 429. The movements of thelevers 16 and 75 are clearly indicated in Figs. 9 and 10.

Each of the rods 3 supporting the shafts of the disks has a hook portion55 at its upper end, which is adapted when the rod is elevated or in itsupper position to be engaged by a dog 56, actuated by a spring 56 andsecured to the frame 6, and thus maintain the particular disk connectedwith such rod in its elevated and inoperative position. Each dog isprovided with a pin 57 at its outer end, and as the frame is moved saidpins are brought successively in juxtaposition to the pin 58 in the arm78 of the shaft 59. This shaft is journaled in bearings 79 and 8O andhas a crank-arm 81 opposite the arm 78. The arm 81 is connected by alink 6() with the arm 60 of a bell-crank lever pivoted at 62, the otherarm 83 of which engages the slotted end of a horizontal lever 64C. Thislever is pivoted at 82 and is held in its normal position by a spring63, which is connected with the slotted end of the lever. i

On the drum-shaft 21 above the snail-wheel is fixed an arm 37, in theouter end of which is a pin 88, which passes through the arm andprojects above and below the same. The lower projecting part of the pinengages once at each revolution of the shaft the free and curved end ofthe lever 64 to move the latter outwardly against the tension of itsspring 68, as indicated by the arrow fr in Fig. 3, thus partiallyrotating the shaft 59 through the connections 83, 60, 60, and 81. As theshaft is so moved the pin 58 engages the pin 57 of the adjacent dog 56,moves the latter away from the hook 55 of the rod 3, and the disk whichhas been supported on said rod is released and will drop by gravity intooperative position, in which the shaft 2 thereof is caught and held inthe recess of a support 40, secured to the center of the bar 24. The bar24 and the lower bar 25 furnish bearings iu which are journaled thestuds 84 and 8O of the rollercarrier 21, the rollers 22 of which areheld against the lowered disk to maintain the latter in contact with theparts which actuate the teeth of the musical comb by the action of aspring 35 on an arm or lever 34, which ispivoted at 83 and connected bya link 27 to the arm 31, which is connected te the stud 30 of theroller-carrier 21, as shown in Fig.

66 represents an arm {ixed on the stud 84 at a point above the shaft 2and adapted to engage said shaft to maintain the disk in operativeposition and to be released therefrom when it is desired to put the diskout of operative position.

The lever 34 is provided on its under side with an extension 36, whichwhen the drum rotates is engaged by the upper part of the pin 38 on thearm 37, thus moving said lever outwardly against the tension of itsspring 35, and thereby partially rotating the roller-cai'- rier throughthe parts 27 and 31, the effect of which is to move the rollers out ofcontact with the disk and at the same time disengage the arm 66 from theshaft of the disk to permit the latter to be drawn up out of operativeposition. rI`he periphery L12 of the drum is in constant frictionalcontact with a frictiondisk 42, fixed on a vertical shaft 4l, the upperend of which carries a wheeli, in the periphery of which are fixed pinswhich are adapted to engage the holes 1" in the disks, and therebyrotate the latter.

In the periphery of each disk is a notch 71, which is engaged by aroller 72, mounted in the outer end of an arm 7 A, pivoted to the upperpart of the rod 3. To prevent the rod 3 from moving with the rotation ofthe disk, I attach thereto a cord 7 5", which has its opposite endfastened to the frame 76, the outer end of which is at the side of thedisk opposite to the direction of the movement of the latter. f

Having thus described my invention, what I claim as new, and desire toobtain by Letters Patent,- is- 1. In an apparatus of the characterdescribed, a plurality of music-disks, an adjustable frame, cordssuspended from said frame and connected at one end with said disks,sockets secured to the other Vend of said cords, a rotatable drum, meansoperated by said drum for engaging' and drawing down said socketswhereby the disks are raised into inoperative positions, and means forholdingl the disks in inoperative positions.

2. In an apparatus of the vcharacter described, a plurality ofmusic-disks, an adjustable frame, cords suspcnded'from said frame eachof said cords connected at one end with a disk, sockets secured to thefree ends of said cords, a hooked rod adapted to engage said socketssuccessively, means for disengaging the rod from said sockets, and meansfor raising and for lowering said rod.

3. In an apparatus of the character described, a plurality ofmusic-disks, an adjustable frame, cords suspended from said frame andhaving one end connected with said disks,

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to the free ends oi' said Cords, a suitably-driven drum, means operatedby said drum for engaging and drawing down said sockets substantially inthe manner and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

ALFRED JACCARD ROD. Witnesses:

R. DE SoMTALIs, MICHEL PIERALLING.

